org.apache.flink.api.java.operators

Class TwoInputOperator<IN1,IN2,OUT,O extends TwoInputOperator<IN1,IN2,OUT,O>>

java.lang.Object

org.apache.flink.api.java.DataSet<OUT>

org.apache.flink.api.java.operators.Operator<OUT,O>

org.apache.flink.api.java.operators.TwoInputOperator<IN1,IN2,OUT,O>

Type Parameters:

IN1 - The data type of the first input data set.

IN2 - The data type of the second input data set.

OUT - The data type of the returned data set.

Direct Known Subclasses:

TwoInputUdfOperator, UnionOperator

public abstract class TwoInputOperator<IN1,IN2,OUT,O extends TwoInputOperator<IN1,IN2,OUT,O>>
extends Operator<OUT,O>

Base class for operations that operates on two input data sets.

Field Summary

Fields inherited from class org.apache.flink.api.java.operators.Operator

dop, name

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TwoInputOperator(DataSet<IN1> input1, DataSet<IN2> input2, TypeInformation<OUT> resultType)

Method Summary

Methods

Modifier and Type	Method and Description
DataSet<IN1>	getInput1() Gets the data set that this operation uses as its first input.
TypeInformation<IN1>	getInput1Type() Gets the type information of the data type of the first input data set.
DataSet<IN2>	getInput2() Gets the data set that this operation uses as its second input.
TypeInformation<IN2>	getInput2Type() Gets the type information of the data type of the second input data set.
protected abstract DualInputOperator<?,?,OUT,?>	translateToDataFlow(Operator<IN1> input1, Operator<IN2> input2) Translates this java API operator into a common API operator with two inputs.

Methods inherited from class org.apache.flink.api.java.operators.Operator

getName, getParallelism, getResultType, name, setParallelism

Methods inherited from class org.apache.flink.api.java.DataSet

aggregate, checkSameExecutionContext, clean, coGroup, cross, crossWithHuge, crossWithTiny, distinct, distinct, distinct, distinct, filter, first, flatMap, getExecutionEnvironment, getType, groupBy, groupBy, groupBy, iterate, iterateDelta, join, join, joinWithHuge, joinWithTiny, map, mapPartition, max, maxBy, min, minBy, output, partitionByHash, partitionByHash, partitionByHash, partitionCustom, partitionCustom, partitionCustom, print, printToErr, project, rebalance, reduce, reduceGroup, runOperation, sum, union, write, write, writeAsCsv, writeAsCsv, writeAsCsv, writeAsCsv, writeAsFormattedText, writeAsFormattedText, writeAsText, writeAsText

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TwoInputOperator

protected TwoInputOperator(DataSet<IN1> input1,
                DataSet<IN2> input2,
                TypeInformation<OUT> resultType)

Method Detail

getInput1

public DataSet<IN1> getInput1()

Gets the data set that this operation uses as its first input.

Returns:

The data set that this operation uses as its first input.

getInput2

public DataSet<IN2> getInput2()

Gets the data set that this operation uses as its second input.

Returns:

The data set that this operation uses as its second input.

getInput1Type

public TypeInformation<IN1> getInput1Type()

Gets the type information of the data type of the first input data set. This method returns equivalent information as getInput1().getType().

Returns:

The first input data type.

getInput2Type

public TypeInformation<IN2> getInput2Type()

Gets the type information of the data type of the second input data set. This method returns equivalent information as getInput2().getType().

Returns:

The second input data type.

translateToDataFlow

protected abstract DualInputOperator<?,?,OUT,?> translateToDataFlow(Operator<IN1> input1,
                                               Operator<IN2> input2)

Translates this java API operator into a common API operator with two inputs.

Parameters:

input1 - The first input of the operation, as a common API operator.

input2 - The second input of the operation, as a common API operator.

Returns:

The created common API operator.